Dehydrated skin

Dehydrated skin describes a condition where the surface of the skin looks oily or shiny, but the layers underneath lack enough water, leaving the skin feeling tight and parched.

The idea is that oil and water are separate things: a face can still look shiny from oil while actually running low on moisture underneath. This happens when the skin's protective outer layer, often called the skin barrier, is weakened and can't hold water in as well. Sources covering Korean beauty trends say the term comes up a lot during seasonal changes in autumn and even in summer, when shifting temperature and humidity are linked to this tight, dry feeling. One thing to know: because the surface can look oily, people sometimes skip moisturizer altogether, but the sources suggest skin routines there focus on adding back moisture rather than avoiding it.